Sheath, pronounced , may refer to: *

Scabbard A scabbard is a sheath for holding a sword, knife, or other large blade. As well, rifles may be stored in a scabbard by horse riders. Military cavalry and cowboys had scabbards for their saddle ring carbine rifles and Lever action, lever-action ...

, a sheath for holding a sword, dagger, knife, or similar edged weapons, as well as long guns, such as rifles and shotguns. * The outer covering of an

electrical cable An electrical cable is an assembly of one or more wires running side by side or bundled, which is used to carry electric current. One or more electrical cables and their corresponding connectors may be formed into a ''cable assembly'', which ...

Debye sheath The Debye sheath (also electrostatic sheath) is a layer in a plasma which has a greater density of positive ions, and hence an overall excess positive charge, that balances an opposite negative charge on the surface of a material with which it is in ...

, a layer of a plasma in physics *

Heliosheath The heliosphere is the magnetosphere, astrosphere and outermost atmospheric layer of the Sun. It takes the shape of a vast, bubble-like region of space. In plasma physics terms, it is the cavity formed by the Sun in the surrounding interst ...

, the region of the heliosphere beyond the termination shock *

Kosha A ''kosha'' (also ''kosa''; Sanskrit कोश, IAST: ), usually rendered "sheath", is a covering of the ''Atman'', or Self according to Vedantic philosophy. There are five ''koshas'' (Panchakoshas; ; the five sheaths), and they are often vis ...

, an element in human being makeup according to Hinduist philosophy *

Koteka The koteka, also referred to as a horim or penis gourd, is a penis sheath traditionally worn by native male inhabitants of some (mainly highland) ethnic groups in New Guinea, Indonesia to cover their penises. The koteka is normally made from a ...

, a penis sheath worn by some natives of New Guinea * ''Sheath'' (album), a 2003 album by LFO *

Sheath dress In fashion, a sheath dress is a fitted, straight cut dress, often nipped at the waistline with no waist seam. When constructing the dress, the bodice and skirt are joined together by combining the skirt darts into one dart: this aligns the skirt ...

, a type of dress

Biology

Carotid sheath The carotid sheath is an anatomical term for the fibrous connective tissue that surrounds the vascular compartment of the neck. It is part of the deep cervical fascia of the neck, below the superficial cervical fascia meaning the subcutaneous adipo ...

, connective tissue around the neck's vascular compartment *

Leaf sheath A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, ste ...

, the leaf base when it forms a vertical coating surrounding the stem *

Myelin sheath Myelin is a lipid-rich material that surrounds nerve cell axons (the nervous system's "wires") to insulate them and increase the rate at which electrical impulses (called action potentials) are passed along the axon. The myelinated axon can be l ...

, an insulating layer over the axon of a neuron * Preputial sheath, protective skin around the penis or clitoris **

Clitoral hood In the female human body, the clitoral hood (also called preputium clitoridis and clitoral prepuce) is a fold of skin that surrounds and protects the clitoral glans, glans of the clitoris; it also covers the external shaft of the clitoris, develop ...

Penile sheath Almost all mammal penises have foreskins or prepuce, although in non-human cases the foreskin is usually a sheath (sometimes called the ''preputial sheath'', ''praeputium'' or ''penile sheath'') into which the whole penis is retracted. In koalas, ...

, the foreskin into which a penis retracts *

Rectus sheath The rectus sheath, also called the rectus fascia,. is formed by the aponeuroses of the transverse abdominal and the internal and external oblique muscles. It contains the rectus abdominis and pyramidalis muscles. Structure The rectus sheath ca ...

, the laminas around abdominal muscles * Root sheath, the inner or epidermic coat around the root of a hair follicle *

Tendon sheath A tendon sheath is a layer of synovial membrane around a tendon. It permits the tendon to stretch and not adhere to the surrounding fascia. It has two layers: * synovial sheath A synovial sheath is one of the two membranes of a tendon sheath wh ...

, a synovial membrane surrounding a tendon in, for example, the fingers

Biology

See also